We have two lines : $$L_1 : a_1x+b_1y+c_1=0,\quad L_2 : a_2x+b_2y+c_2=0$$ and the angle bisectors : $$L_{\pm} : \frac{a_1x+b_1y+c_1}{\sqrt{a_1^2+b_1^2}}=\pm\frac{a_2x+b_2y+c_2}{\sqrt{a_2^2+b_2^2}}$$ If we let $\theta$ be the (smaller) angle between $L_+$ and $L_1$, then we have $$\cos\theta=\frac{\left|a_1\left(\frac{a_1}{\sqrt{a_1^2+b_1^2}}-\frac{ ...
Tomatoes run on warmth; plant in late spring and early summer except in zone 10, where they are a fall and winter crop. Devote a prime, sunny spot to growing tomatoes. Tomatoes need at least 6 to 8 hours of sun to bring out their best flavors.
When to Start Seeds Indoors. Provide extra protection for tomatoes plants by starting seeds indoors four to eight weeks before planting outdoors. February is a good time to sow seeds indoors. When planting indoors, use a light potting mix and plant seeds 1/2 inch deep.The seeds germinate well when kept evenly moist, warm and with six to eight hours of sunlight daily.he best time to sow seeds directly into the garden is after all danger of frost and soil has warmed, usually in May. Prepare the soil by amending with compost, peat moss or leaf mold, and deeply spade or plow the area. When sowing seeds, place three seeds in a 1/2-inch-deep hole with 1 inch between holes.